Question: Are {Wyatt_Earp} {sibling}  {Virgil Earp} and {James Earp} ?
Paraphrase: Was Wyatt, Virgil and James all brothers?
SPARQL (Wikidata): ASK WHERE { wd:Q44616 wdt:P3373 wd:Q931824 . wd:Q44616 wdt:P3373 wd:Q3806537 }